Messages in this thread | | | Date | Tue, 17 Apr 2018 10:40:49 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v2 2/2] x86/CPU/AMD: Derive CPU topology from CPUID Fn0xB when available |
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On Wed, Apr 04, 2018 at 01:45:14AM -0500, Suravee Suthikulpanit wrote: > Derive topology information from Extended Topology Enumeration > (CPUID Fn0x0000000B) when the information is available. > > Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> > --- > arch/x86/kernel/cpu/amd.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c > index 2c1a9f2..cdd67d1 100644 > --- a/arch/x86/kernel/cpu/amd.c > +++ b/arch/x86/kernel/cpu/amd.c > @@ -327,6 +327,7 @@ static void amd_get_topology(struct cpuinfo_x86 *c) > > /* get information required for multi-node processors */ > if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { > + int err; > u32 eax, ebx, ecx, edx; > > cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); > @@ -344,6 +345,14 @@ static void amd_get_topology(struct cpuinfo_x86 *c) > c->x86_max_cores /= smp_num_siblings; > } > > + /* > + * In case leaf B is avaialble, use leaf B to derive
s/avaialble/available/
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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